Pneumatic tire.



UNITED STATES Patented November 3, 1903.

PATENT OEEICE.

JCI-1N RUssELL RRUNT AND RICHARD CHARLES PITT, CE CHRIsTCHURCH, NEWZEALAND.v

PN EUMATICJIRE.

SPECIFICATION forming part of Letters Patent N o. 742,831, datedNovember 3, 1903.

Application filed April 9, 1902. Serial No. 102,081. (No model.)

To all whom t may concern.-

and RICHARD CHARLES PITT, subjects of the King of Great Britain andIreland, residing.

at Christchurch, New Zealand, have invented a new and useful Improvementin or Relating to Pneumatic Tires; and we do hereby declare thefollowing to be a full, clear, and exact description of the same.

This invention provides means whereby cyclists and others usingpneumatic tires may avoid the inconvenience due through having theirtires punctured at a considerable distance from home.

The invention Consists in the features and combination and arrangementof parts hereinafter described, and particularly vpointed out in theclaim.

In the accompanying drawings, Figure l is a sectional view of a tirefitted with an emergency-tube; and Fig. 2 is a viewof a tube, showingthe vspecial form of joint.v Fig. 3 is a detail plan view of the twoends of the emergency-tube with the connecting-sleeve.

A is the tire of the bicycle, containing the ordinary tube B, that isshown inated.

C is the emergency-tube (shown deated in Fig. l) upon the rim B of thewheel, with the valve b of the ordinary passing through it. In Fig. 2the emergency is inflated and is provided with free ends c c, joinedtogether by a coupling D, that is pierced, as at m, Fig. 3, so that thevalve b of ordinary tube can pass through without affecting theiniiation of the tube. 4

c is the emergency-tube valve, that is held -upon the vrim of wheel inthe ordinary manner.

Upon a puncture occurring tothe ordinary tube it is only necessary toinflate the emergency. The ordinary then lies dat against the shoe ofwheel and acts' as a pad to the emergency, which will carry the ridersafely in ordinary course until the puncture can be repaired; f

Having now particularly described and ascertained the nature of our saidinvention and in what manner the same is to be performed, wedeclare thatwhat we claim, is-

In combination with the ordinary pneumatic tire and the wheel-rim, anemergencytire normally deiiated and arranged between the rim and theordinarytire, the said emergency -tire having its 'ends closed, alsleeve joining the said closed ends but forming no communicationbetween them, and the valvestem for the ordinary tire passing betweenthe closed ends of the emergency-tire and through the saidconnecting-sleeve, substantially as described.

In testimony whereof we have signed this specification in the presenceof two subscribing witnesses.

JOHNfRUSSELL BRUN'I. RICHARD CHARLES PITT.

Witnesses:

P. M. NEWTON, M. E. EYES.

